
The IAB Measurement Leadership Summit brought together over 100 invite-only data and measurement executives from across the advertising ecosystem. This summit’s theme was “Driving to Outcomes”, and focused on modernizing MMM, the intersection of privacy, AI, and first-party data, and cross-channel attribution, outcomes, and incrementality.
A huge thank you to everyone who contributed to making Video Leadership Summit 2025 a resounding success! We especially recognize the invaluable support of our Principal Partner, TikTok. As we wrap up another incredible event, we look forward to seeing you next year!
Read the highlights below and the full recap from the summit here.
Key Takeaways

Traditional MMM has reached its limit. The call to modernize is urgent, with industry leaders demanding more granularity across inputs: separating Advanced TV from linear, capturing retail media, podcast, audio, digital out-of-home, and gaming as distinct categories, and accounting for ad formats and creative variables.
But modernizing MMM means going beyond just spend, conversions, and ROI. It must capture attention signals, behavioral patterns, exposure sequences, contextual impact, and the nuanced roles of content, device, format and channel. It must also support the triangulation of MMM with other techniques—like incrementality testing and multiple attribution views—to paint a clearer, more connected picture of performance.
The industry needs to come together to create a modernization framework that supports taxonomy alignment, ad format categorization, publisher-level detail and strategy approaches. Cross-stakeholder collaboration will be critical.
